In my experience as a recovering alcoholic, myself, as long as I entertained the idea of drinking again, I did. It sounds to me like your husband isn't "done" drinking. That doesn't mean a few more bad experiences won't convince him and that he can't get well, but whether you stay for that process is a question only you can answer. He may never get well, or he might surprise you and stay sober in spite of his thinking out loud. Unfortunately, none of us has a crystal ball to see what the future holds.